AM conservative talk radio as well as the mainstream media is not answering with certainty this question about obama, or if they have where is it? And why was Corsi held hostage in Kenya? Why is it necessary for obama to keep his brith certificate sealed?

Why will the obama not release his birth certificate, why is it sealed in Hawaii? I have read that it is missing seals which validate authenticity.
Why are radio shows, like Mike Church on Sirius, not even allowing callers to bring up the subject. I called in and was told ” we are not discussing that topic” and they hung up immediately. What is all the secrecy about?